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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
16/08/2011 |
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Autoria: |
ELLIS, F. B.; HOWSE, K. R. |
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Afiliação: |
ARC Letcombe Lab., Wantage, Oxon OX12 9JT, UK. |
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Título: |
Effects of cultivation on the distribution of nutrients in the soil and the uptake of nitrogen and phosphorus by spring barley and winter wheat on there soil types. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Soil & Tillage Research, Amsterdam, v. 1, n. 1, p. 35-46, 1981. |
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Idioma: |
Inglês |
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Conteúdo: |
The effects of cultivation, ploughing (20-25 cm), tine cultivation (7.5-10 or 15-20 cm) and direct drilling on the distribution of extractable soil P and K were compared on a sandy loam, a calcareous silt loam overlying chalk and a calcareous clay. Effects on the uptake of N and P by spring barley and winter wheat crops were also investigated. Direct drilling and the 2 depths of tine cultivation gave closely similar results and there was an increased conc. of extractable P and K close to the soil surface compared with the more uniform distribution through the tilled layer caused by the inversion of the soil by ploughing. In general, during the season P conc. in the shoot DM and P content/unit area in the crops were not affected by the differences in nutrient distribution. Thus no effects were detected in samples collected at the beginning of stem elongation. However, at anthesis in both crops P content was greater after direct drilling than after ploughing. Ploughing resulted in significantly greater conc. of N in the DM than did the other cultivation treatments. Averaging over both crops at the 3 sites, neither the yields of DM nor the total content of N differed significantly between cultivation treatments. The results give further confidence that simplified cultivation techniques including direct drilling are unlikely, at least in the short term, to affect adversely the uptake of nutrients by cereals. Emphasis is made to the closely similar results in the distribution of nutrients in the soil when it was disturbed to varying depths but without inversion.ADDITIONAL ABSTRACT:The effects of cultivation, ploughing (20-25 cm), tine cultivation (7.5-10 or 15-20 cm) and direct drilling on the distribution of extractable soil phosphate and potassium in 3 soils and on the uptake of nitrogen and phosphate by spring barley and winter wheat were investigated. Direct drilling and the 2 depths of tine cultivation gave similar results and there was an increased concentration of extractable P and K close to the soil surface compared with the more uniform distribution through the tilled layer caused by the inversion of the soil by ploughing. During the season phosphate concentration in the shoot dry matter and in the crops were not affected by the differences in nutrient distribution, but at anthesis in both crops phosphate content was greater after direct drilling than after ploughing. Ploughing resulted in significantly greater concentrations of nitrogen in the dry matter. Averaging over both crops, neither the yields of dry matter nor the total content of nitrogen differed significantly between cultivation treatments. MenosThe effects of cultivation, ploughing (20-25 cm), tine cultivation (7.5-10 or 15-20 cm) and direct drilling on the distribution of extractable soil P and K were compared on a sandy loam, a calcareous silt loam overlying chalk and a calcareous clay. Effects on the uptake of N and P by spring barley and winter wheat crops were also investigated. Direct drilling and the 2 depths of tine cultivation gave closely similar results and there was an increased conc. of extractable P and K close to the soil surface compared with the more uniform distribution through the tilled layer caused by the inversion of the soil by ploughing. In general, during the season P conc. in the shoot DM and P content/unit area in the crops were not affected by the differences in nutrient distribution. Thus no effects were detected in samples collected at the beginning of stem elongation. However, at anthesis in both crops P content was greater after direct drilling than after ploughing. Ploughing resulted in significantly greater conc. of N in the DM than did the other cultivation treatments. Averaging over both crops at the 3 sites, neither the yields of DM nor the total content of N differed significantly between cultivation treatments. The results give further confidence that simplified cultivation techniques including direct drilling are unlikely, at least in the short term, to affect adversely the uptake of nutrients by cereals. Emphasis is made to the closely similar results in the distribution of ... Mostrar Tudo |
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Palavras-Chave: |
Fertilização; Trigo (Inverno). |
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Thesagro: |
Cevada; Nitrogênio; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03268naa a2200193 a 4500
001 1832841
005 2011-08-16
008 1981 bl --- 0-- u #d
100 1 $aELLIS, F. B.
245 $aEffects of cultivation on the distribution of nutrients in the soil and the uptake of nitrogen and phosphorus by spring barley and winter wheat on there soil types.
260 $c1981
520 $aThe effects of cultivation, ploughing (20-25 cm), tine cultivation (7.5-10 or 15-20 cm) and direct drilling on the distribution of extractable soil P and K were compared on a sandy loam, a calcareous silt loam overlying chalk and a calcareous clay. Effects on the uptake of N and P by spring barley and winter wheat crops were also investigated. Direct drilling and the 2 depths of tine cultivation gave closely similar results and there was an increased conc. of extractable P and K close to the soil surface compared with the more uniform distribution through the tilled layer caused by the inversion of the soil by ploughing. In general, during the season P conc. in the shoot DM and P content/unit area in the crops were not affected by the differences in nutrient distribution. Thus no effects were detected in samples collected at the beginning of stem elongation. However, at anthesis in both crops P content was greater after direct drilling than after ploughing. Ploughing resulted in significantly greater conc. of N in the DM than did the other cultivation treatments. Averaging over both crops at the 3 sites, neither the yields of DM nor the total content of N differed significantly between cultivation treatments. The results give further confidence that simplified cultivation techniques including direct drilling are unlikely, at least in the short term, to affect adversely the uptake of nutrients by cereals. Emphasis is made to the closely similar results in the distribution of nutrients in the soil when it was disturbed to varying depths but without inversion.ADDITIONAL ABSTRACT:The effects of cultivation, ploughing (20-25 cm), tine cultivation (7.5-10 or 15-20 cm) and direct drilling on the distribution of extractable soil phosphate and potassium in 3 soils and on the uptake of nitrogen and phosphate by spring barley and winter wheat were investigated. Direct drilling and the 2 depths of tine cultivation gave similar results and there was an increased concentration of extractable P and K close to the soil surface compared with the more uniform distribution through the tilled layer caused by the inversion of the soil by ploughing. During the season phosphate concentration in the shoot dry matter and in the crops were not affected by the differences in nutrient distribution, but at anthesis in both crops phosphate content was greater after direct drilling than after ploughing. Ploughing resulted in significantly greater concentrations of nitrogen in the dry matter. Averaging over both crops, neither the yields of dry matter nor the total content of nitrogen differed significantly between cultivation treatments.
650 $aCevada
650 $aNitrogênio
650 $aSolo
653 $aFertilização
653 $aTrigo (Inverno)
700 1 $aHOWSE, K. R.
773 $tSoil & Tillage Research, Amsterdam$gv. 1, n. 1, p. 35-46, 1981.
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Registro original: |
Embrapa Trigo (CNPT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
24/04/2013 |
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Data da última atualização: |
25/04/2013 |
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Tipo da produção científica: |
Video/DVD |
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Autoria: |
Embrapa Milho e Sorgo. |
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Afiliação: |
Embrapa Milho e Sorgo. |
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Título: |
SILAGEM de milho e sorgo para novilhos confinados. Dia de Campo na TV. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Brasília, DF: Embrapa Informação Tecnológica, 04 de outubro de 2002. |
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Descrição Física: |
1 fita de vídeo (7 min), VHS, son., color. |
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Idioma: |
Português |
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Notas: |
Programa de Tv. |
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Conteúdo: |
A demanda por altas produtividades nos agronegócios é crescente como forma de viabilização das atividades. Altos ganhos de peso em confinamento de bovinos, além da questão genética, dependem da disponibilidade de alimentação de boa qualidade e de baixo custo. Para se obter volumoso de boa qualidade, é necessário empregar alta tecnologia na implantação das lavouras, usos de cultivares apropriadas, colheita no estágio adequado, além dos fatores próprios do processo da boa ensilagem. O vídeo traz informações sobre a melhor época de corte do milho e sorgo para silagem e o desempenho zootécnico e econômico de novilhos confinados recebendo volumoso constituído de silagens das cultivares. Centro de Pesquisa responsável: Embrapa Milho e Sorgo |
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Palavras-Chave: |
Novilhos confinados; Vídeo. |
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Thesagro: |
Milho; Silagem; Sorgo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/81944/1/SilagemMilhoSorgoNovilhosConfinados.wmv
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Marc: |
LEADER 01370nam a2200193 a 4500
001 1956544
005 2013-04-25
008 2002 bl --- 0-- m #d
100 1 $aEmbrapa Milho e Sorgo.
245 $aSILAGEM de milho e sorgo para novilhos confinados. Dia de Campo na TV.$h[electronic resource]
260 $aBrasília, DF: Embrapa Informação Tecnológica, 04 de outubro de 2002.$c2002
300 $c1 fita de vídeo (7 min), VHS, son., color.
500 $aPrograma de Tv.
520 $aA demanda por altas produtividades nos agronegócios é crescente como forma de viabilização das atividades. Altos ganhos de peso em confinamento de bovinos, além da questão genética, dependem da disponibilidade de alimentação de boa qualidade e de baixo custo. Para se obter volumoso de boa qualidade, é necessário empregar alta tecnologia na implantação das lavouras, usos de cultivares apropriadas, colheita no estágio adequado, além dos fatores próprios do processo da boa ensilagem. O vídeo traz informações sobre a melhor época de corte do milho e sorgo para silagem e o desempenho zootécnico e econômico de novilhos confinados recebendo volumoso constituído de silagens das cultivares. Centro de Pesquisa responsável: Embrapa Milho e Sorgo
650 $aMilho
650 $aSilagem
650 $aSorgo
653 $aNovilhos confinados
653 $aVídeo
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Embrapa Milho e Sorgo (CNPMS) |
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